Graphene-based, two dimensional porous ionic polymer networks and carbon nanosheets for supercapacitors
Synthesis and Properties of Functional Materials
Final Report Abstract
The work dealt with the generation of ionic, diazapentacenium-containing step ladder polymers and associated model compounds. Azapentacenes have five linearly fused aromatic rings and can exhibit semiconductor properties in the solid state. Due to their material properties, they are of interest for the design of electronic devices. The aim of the work was the synthesis of novel, cationic diazapentacenium polymers with high solubility and sufficient oxidation and photostability. A synthesis concept was developed for the generation of these polymers, in which first an open-chain (single-stranded) precursor polymer was produced via a Buchwald-Hartwig coupling, and then, the corresponding ladder polymer, was produced in a polymer-analogous cyclization step. The acid used here also defines the counterion to the cationically charged polymer backbone. For a detailed analysis of the cationic diazapentacenium polymers two model compounds were prepared and intensively examined for aggregation effects.
Publications
- Boosting Oxygen Reduction of Single Iron Active Sites via Geometric and Electronic Engineering: Nitrogen and Phosphorus Dual Coordination, J. Am. Chem. Soc. 2020, 142, 2404–2412
K. Yuan, D. Lützenkirchen-Hecht, L. Li, L. Shuai, Y. Li, R. Cao, M. Qiu, X. Zhuang, M. K. H. Leung, Y. Chen, U. Scherf,
(See online at https://doi.org/10.1021/jacs.9b11852) - Cationic Diazapentacenium Polymers Made in a Sequence of C-N Cross Coupling Polymerization and Acid‐Mediated Postpolymerization Cyclization, Macromolecular Rapid Communications 2021, 42, 2100370
D. Wetterling, M. Forster, A. C. B. Rodrigues, J. S. Seixas de Melo, U. Scherf
(See online at https://doi.org/10.1002/marc.202100370) - Tuning J‐aggregate Formation and Emission Efficiency in Cationic Diazapentacenium Dyes, Chemistry - A European Journal 2021, 27, 7826-7830
A. C. B. Rodrigues, D. Wetterling, U. Scherf, J. S. Seixas de Melo
(See online at https://doi.org/10.1002/chem.202100123)
